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Code Issues Wiki Activity

Bug 498434 - Floating-point literal with leading zero

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Change-Id: I7417405ae89b41c7d3b28089320cc66f1c7c6173
This commit is contained in:
Nathan Ridge 2016-07-26 00:27:10 -04:00 • committed by Gerrit Code Review @ Eclipse.org
parent 035520ee89
commit 69fb4ee9cd
2 changed files with 27 additions and 7 deletions
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8
core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2CPPTests.java
View file

@ -11785,6 +11785,14 @@ public class AST2CPPTests extends AST2TestBase {
assertTrue(test.getType() instanceof IProblemType); // resolution is ambiguous assertTrue(test.getType() instanceof IProblemType); // resolution is ambiguous
} }
// double waldo1 = 02.968;
// double waldo2 = 09.268;
// double waldo3 = 02e2;
// double waldo4 = 09e2;
public void testFloatLiteralWithLeadingZero_498434() throws Exception {
parseAndCheckImplicitNameBindings();
}
// char foo() { // char foo() {
// return '*'; // return '*';
// } // }

24
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPASTLiteralExpression.java
View file

@ -444,8 +444,12 @@ public class CPPASTLiteralExpression extends ASTNode implements ICPPASTLiteralEx
while (Character.isDigit(c) && i < fValue.length) { while (Character.isDigit(c) && i < fValue.length) {
c = fValue[++i]; c = fValue[++i];
} }
return i;
} }
/*
* A floating-point constant could also have a leading zero
*/
return handleDecimalOrExponent(c, i);
} else if (Character.isDigit(c)) { } else if (Character.isDigit(c)) {
/* decimal-literal : /* decimal-literal :
* nonzero-digit (c has to be this to get into this else) * nonzero-digit (c has to be this to get into this else)
@ -456,11 +460,7 @@ public class CPPASTLiteralExpression extends ASTNode implements ICPPASTLiteralEx
c = fValue[++i]; c = fValue[++i];
} }
if (c == '.') { return handleDecimalOrExponent(c, i);
return afterDecimalPoint(i);
} else if ((c | 0x20) == 'e') {
return exponentPart(i);
}
} else { } else {
// Somehow we got called and there wasn't a digit // Somehow we got called and there wasn't a digit
// Shouldn't get here // Shouldn't get here
@ -470,6 +470,18 @@ public class CPPASTLiteralExpression extends ASTNode implements ICPPASTLiteralEx
return i; return i;
} }
/*
* Consumes a decimal point or exponent, if present.
*/
private int handleDecimalOrExponent(char c, int i) {
if (c == '.') {
return afterDecimalPoint(i);
} else if ((c | 0x20) == 'e') {
return exponentPart(i);
}
return i;
}
/* /*
* Called with the expectation that fValue[i] == '.' * Called with the expectation that fValue[i] == '.'
*/ */